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Posted by Trevor Jones on July 15, 2007, 12:14 pm
Please log in for more thread options James Crean wrote:
> Hi all,
>
> I am looking for a hand-held air hammer for repousse work on 1mm copper.
>
> Please could anybody recommend a model/brand that would be suitable for
> this?
>
> I guess I'm looking for something with a short stroke and reduced vibration
> (or something like that).
>
> I live in Britain, so it would really help if somebody could recommend a
> brand that I can get over here.
>
> Also, does anybody know where I could get a selection of hammer attachments
> (i.e. not the chisel attachments that are usually included with the air
> hammer).
>
> Many thanks!
>
> Dave Willis
>
>
Find an outfit that sells aircraft rivetting tools and tooling for
building or repairing aircraft.
You want to look at rivet guns.
They are rated in X's
A 1X rivet gun is suitable for very tiny rivets of soft marterial. A
7x gun is one badass rivet gun!
You will likely want a 2x or 3x rivet gun and I suggest spending what
it takes to get a good brand like Sioux, Ingersol Rand, or Dessouter (sp?).
The cheap air hammers sold for automotive work are fit only for use
flat-out, and lack the control that is available from what is called a
"teasing" trigger.
Rivet snaps (the equivalent to a chisel) are available in a couple
different shapes, sizes and profiles. About the only shape I think would
be of use to you as is would be a mushroom snap. The rest, you will have
to shape to your needs.
The standard shank size to look for is .401 inches. You can use a
coiled spring retainer, or do what most of the shops I have worked in
do, run a tight stretched bit of bungee cord around the tool and the gun
body to hold the tool in place.
Check at the newsagents for magazines relating to homebuilt aircraft.
The tool seller that advertise there would be a good place to start.
Stay clear of places that cater to artists unless you have a really good
idea of what the tools are actually worth, as, without fail, these
places tend to charge the highest prices I have ever seen on items that
are dead common, if you know where else they can be got.
Search on ebay for rivet gun. They go quite cheap compared to buying
new, and they are rugged tools with few things to go wrong.
If they do not come with one, put an adjustable regulator on, to
control the maximum speed.
Wear ear protection!
Cheers
Trevor Jones
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